据央视新闻消息,被称作“全球最快高铁”的CR450动车组,正在沪渝蓉高铁开展运用考核。从去年底样车下线以来,它经过一轮又一轮周考、月考、期中考,已经交出了时速450公里的答卷,各项指标都已合格,但考试还在继续。(东方视频 丁一涵)
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